CN203672756U - Indoor constant head test device for anisotropic soil bidirectional permeability coefficient - Google Patents
Indoor constant head test device for anisotropic soil bidirectional permeability coefficient Download PDFInfo
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- CN203672756U CN203672756U CN201320833798.9U CN201320833798U CN203672756U CN 203672756 U CN203672756 U CN 203672756U CN 201320833798 U CN201320833798 U CN 201320833798U CN 203672756 U CN203672756 U CN 203672756U
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Abstract
The utility model discloses an indoor constant head test device for an anisotropic soil bidirectional permeability coefficient. The test device is a detachable permeable container, which is composed of a permeable drainage base, a manometric wall, an overflow wall, a common wall and the like, all parts are connected in pairs by bolts; gaskets are arranged at the contact parts of the walls; after the vertical permeable parameters are measured, the measurement of the horizontal permeable coefficient can be conveniently and quickly carried out via regulating the combination of the walls of the permeable container, the existing test conditions and advantages are utilized to the greatest extent, one-time sampling can be used for direct permeable coefficient measurement in different directions for many times, and testing precision and efficiency are greatly improved.
Description
Technical field
The utility model relates to the soil sample infiltration coefficient technical field of measurement and test in Geotechnical Engineering, especially relates to the indoor constant head proving installation of anisotropy soil body two-way penetration coefficient.
Background technology
Infiltration coefficient represents the proportionality constant of flow velocity and hydraulic gradient linear relationship in Darcy's law, is the important indicator of describing soil body Permeable characteristic, and its Accurate Determining directly affects the correctness of seepage calculation result and the rationality of seepage stability control program.Because the soil body is different in crude sedimentation and level in consolidation process and vertical stress condition, foundation soil is generally the anisotropic soil of level to stratification, soil body structure in different directions there are differences, and causes them obviously different from the infiltration coefficient on vertical direction in the horizontal direction.At present at Building Engineering Design with in construction, also many setting soil bodys infiltration coefficient is in different directions all identical, this brings hidden danger just to safe operation and the maintenance in later stage, and in conventional indoor, as constant head test and varying head test, only can test the infiltration coefficient perpendicular to aspect.Therefore the two-way penetration coefficient of the Accurate Determining anisotropy soil body has important theory and real researching value.
Before the utility model, Chinese patent CN 201210530675.8 discloses a kind of stratiform coarse grain Soil Anisotropic infiltration coefficient test macro and method of testing, this test system structure is too complicated with operation, its upstream water supply installation is owing to adopting high pressurized gas pressure water, the water level that is difficult to ensure card sample device end face is constant, be difficult to form steady seepage, carry out and bring very large puzzlement to test, and due to malleable head difference not in process of the test, loading sample once can only be opened single test, the infiltration coefficient of different directions will be measured in the test of different method of preparing sample, etc. some problems cause this Patent equipment test efficiency lower.Chinese patent CN 201210576870.4 discloses a kind of determinator and method thereof of soil body horizontal osmotic coefficient, this Patent equipment is based on fixed permeability test, use the symmetrical consolidation theory of too husky standard shaft to inquire into infiltration coefficient, in the middle of it, drainage channel is the suction unit being made up of geotextile, the soil body is the easy stress deformation of geotextile in compression concretion process, cause soil body generation lateral expansion, and draining glass tube vertically arranges to cause and in drainage channel, has ponding, soil body inner surface boundaries condition changes, in addition there is the series of factors such as more hypothesis in Terzzaghi's consolidation theory itself, cause the reliability of the horizontal osmotic coefficient that the method measures to be subject to very large query.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this utility model has been to provide a kind of indoor constant head proving installation of anisotropy soil body two-way penetration coefficient, utilize to greatest extent existing test condition and advantage, the gas permeability measurement of different directions can be directly carried out repeatedly in single sample preparation, has greatly improved precision and the efficiency of test.
For achieving the above object, the technical solution of the utility model is:
The indoor constant head proving installation of anisotropy soil body two-way penetration coefficient, for detachable permeability vessel, it is mainly made up of an infiltration water-drainage base seat, a pressure measurement wall, an overflow wall and four common wall etc., between each several part, connected by bolt between two, and wall and wall contact portion are provided with sealing gasket, described infiltration water-drainage base seat top is porous plate, and centre is water space, and sidewall connects rising pipe.Equally spacedly respectively on two axis of symmetry of described pressure measurement wall arranging three pressure taps.Described overflow wall, with two spout holes, is distributed on the equidistant axis of symmetry of two intersection edges.
Four described common wall are divided into vertical infiltration coefficient test wall and horizontal osmotic coefficient test wall, and the former is of a size of 21 × 10cm, and the latter is of a size of 20 × 8cm.
Described detachable permeability vessel is made up of organic glass material, size 22 × the 10cm of described bottom surface infiltration water-drainage base seat, the size of pressure measurement wall and overflow wall is 21 × 20cm, and the pressure tap spacing of described pressure measurement wall is 5cm, and the spout hole of described overflow wall is apart from top margin 0.5cm.
On the relevant position of described sealing gasket, be equipped with consistent with worn diameter of bolt hole.
According to above technical scheme, the attainable beneficial effect of the present invention is:
A sample preparation, can repeatedly measure the two-way penetration coefficient of the anisotropy soil body, in improving measuring accuracy and efficiency, utilize to greatest extent existing test condition and advantage, this test unit is simple in structure, easy to make, with low cost, swift to operate, when the necessary permeability parameters of the soil body is provided for engineering is actual, have broad application prospects.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, infiltration water-drainage base seat; 2, pressure measurement wall; 3, overflow wall; 4, common wall; 5, pressure tap; 6, spout hole; 7, set bolt; 8, sealing gasket; 9, apopore; 10, porous plate; 11, water space.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, the indoor constant head proving installation of anisotropy soil body two-way penetration coefficient described in the utility model, for detachable permeability vessel, for organic glass material is made, it is mainly by an infiltration water-drainage base seat 1, a pressure measurement wall 2, five part compositions such as an overflow wall 3 and four common wall 4, four described common wall 4 are divided into vertical infiltration coefficient test wall 4 and horizontal osmotic coefficient test wall 4, because installation needs both sizes different, the former is of a size of 21 × 10cm, the latter is of a size of 20 × 8cm, two identical common wall 4 only need be installed while testing a kind of infiltration coefficient, between each several part, connected by bolt 7 between two, and wall and wall contact portion are provided with sealing gasket 8, on the relevant position of described sealing gasket 8, be equipped with consistent with worn bolt 7 diameters hole.Size 22 × the 10cm of described infiltration water-drainage base seat 1, top is porous plate 10, and centre is water space 11, and sidewall is provided with apopore 9.Equally spacedly respectively on two axis of symmetry of described pressure measurement wall 2 arranging three pressure taps 5, pressure tap 5 spacing are 5cm.Described overflow 3 cornices have two spout holes 6, are distributed on the equidistant axis of symmetry of two intersection edges, and spout hole 6 is apart from top margin 0.5cm.
Before the two-way penetration coefficient of the test anisotropy soil body, first with reference to the structural representation shown in Fig. 1, with bolt 7, infiltration water-drainage base seat 1, pressure measurement wall 2, overflow wall 3 and two vertical infiltration coefficients being tested to walls 4 assembles, with rubber plug block temporarily use less than hole, put on the permeability vessel base of conventional constant head device for testing permeability coefficient, connect associated pipe, whether the leakproofness of check test system is intact, then carries out successively the measurement test of the vertical infiltration coefficient of the soil body according to conventional dress sample, saturated and method of testing.After vertical gas permeability measurement finishes, first by detachable permeability vessel and pipeline disconnection around, smooth sample top, horizontal osmotic coefficient test wall 4 is installed, then the detachable permeability vessel 180 that overturns is spent, the horizontal osmotic coefficient test wall 4 of installing before making is positioned at bottom surface, dismantles and is positioned at the infiltration water-drainage base seat 1 of end face, changes another horizontal osmotic coefficient test wall 4.Side rotary turn 90 degrees again, dismantles in vertical infiltration coefficient test wall 4 of end face, the infiltration water-drainage base seat 1 removing before changing.Reverse rotation 90 is spent again, makes to permeate water-drainage base seat 1 and is positioned at bottom surface, and the vertical infiltration coefficient test wall 4 of dismantling above just can repeat operation steps above and carry out the surveying work of horizontal osmotic coefficient.
The undeclared part that relates in the utility model is same as the prior art or adopt prior art to be realized.
Claims (2)
1. the indoor constant head proving installation of an anisotropy soil body two-way penetration coefficient, this test unit is detachable permeability vessel, comprise an infiltration water-drainage base seat, a pressure measurement wall, an overflow wall and four common wall, between various piece, connected by bolt between two, and wall and wall contact portion are provided with sealing gasket; It is characterized in that: described infiltration water-drainage base seat top is porous plate, centre is water space, and sidewall connects rising pipe; Equally spacedly respectively on two axis of symmetry of described pressure measurement wall arranging three pressure taps; Described overflow wall, with two spout holes, is distributed on the equidistant axis of symmetry of two intersection edges; Four described common wall are divided into vertical infiltration coefficient test wall and horizontal osmotic coefficient test wall, and the former is of a size of 21 × 10cm, and the latter is of a size of 20 × 8cm.
2. a kind of indoor constant head proving installation of anisotropy soil body two-way penetration coefficient according to claim 1, detachable permeability vessel described in it is characterized in that is made up of organic glass material, size 22 × the 10cm of described infiltration water-drainage base seat, the size of pressure measurement wall and overflow wall is 21 × 20cm, the pressure tap spacing of described pressure measurement wall is 5cm, and the spout hole of described overflow wall is apart from top margin 0.5cm.
3. a kind of indoor constant head proving installation of anisotropy soil body two-way penetration coefficient according to claim 1, is characterized in that being equipped with on the relevant position of described sealing gasket consistent with worn diameter of bolt hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320833798.9U CN203672756U (en) | 2013-12-17 | 2013-12-17 | Indoor constant head test device for anisotropic soil bidirectional permeability coefficient |
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| CN201320833798.9U CN203672756U (en) | 2013-12-17 | 2013-12-17 | Indoor constant head test device for anisotropic soil bidirectional permeability coefficient |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596378A (en) * | 2016-12-25 | 2017-04-26 | 湖南城市学院 | Device for batch experiment of soil body rainwater infiltration characteristics and use method thereof |
| CN106596379A (en) * | 2016-12-26 | 2017-04-26 | 立方通达实业（天津）有限公司 | Bidirectional consolidation permeameter |
| CN107121360A (en) * | 2017-04-24 | 2017-09-01 | 南京工业大学 | A kind of mud flows tester |
| CN107831106A (en) * | 2017-12-29 | 2018-03-23 | 河北省地质学会 | Intelligent permeability survey testing stand |
| CN108507930A (en) * | 2018-06-21 | 2018-09-07 | 天津大学 | Directly measure the experimental rig of three-dimensional infiltration coefficient under bury difference consolidation pressure |
| CN108801881A (en) * | 2018-09-07 | 2018-11-13 | 福州大学 | The horizontal and vertical infiltration coefficient simultaneous determination device of silt, cohesive soil and its test method |
| CN110687033A (en) * | 2019-11-13 | 2020-01-14 | 哈尔滨工业大学（深圳） | Penetration test device for researching internal erosion anisotropy of soil body under stress action |
| CN111351741A (en) * | 2020-03-17 | 2020-06-30 | 中国海洋大学 | Ocean sediment gas permeability anisotropy testing device and using method |
| CN112986100A (en) * | 2021-03-30 | 2021-06-18 | 中国电建集团西北勘测设计研究院有限公司 | Multipurpose permeameter device for eliminating side wall streaming effect and using method |
| CN113109230A (en) * | 2021-03-30 | 2021-07-13 | 中国电建集团西北勘测设计研究院有限公司 | Novel earth and rockfill dam construction material seepage deformation test system and method |
| CN114965206A (en) * | 2022-04-14 | 2022-08-30 | 中国电建集团西北勘测设计研究院有限公司 | Comprehensive testing system and method for anisotropic permeability coefficient of rock-soil body |
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2013
- 2013-12-17 CN CN201320833798.9U patent/CN203672756U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596378A (en) * | 2016-12-25 | 2017-04-26 | 湖南城市学院 | Device for batch experiment of soil body rainwater infiltration characteristics and use method thereof |
| CN106596379A (en) * | 2016-12-26 | 2017-04-26 | 立方通达实业（天津）有限公司 | Bidirectional consolidation permeameter |
| CN107121360A (en) * | 2017-04-24 | 2017-09-01 | 南京工业大学 | A kind of mud flows tester |
| CN107831106A (en) * | 2017-12-29 | 2018-03-23 | 河北省地质学会 | Intelligent permeability survey testing stand |
| CN107831106B (en) * | 2017-12-29 | 2020-03-03 | 河北省地质学会 | Intelligent permeability measurement test bed |
| CN108507930B (en) * | 2018-06-21 | 2024-04-02 | 天津大学 | Test device for directly measuring three-way permeability coefficient of soft clay under different consolidation pressures |
| CN108507930A (en) * | 2018-06-21 | 2018-09-07 | 天津大学 | Directly measure the experimental rig of three-dimensional infiltration coefficient under bury difference consolidation pressure |
| CN108801881A (en) * | 2018-09-07 | 2018-11-13 | 福州大学 | The horizontal and vertical infiltration coefficient simultaneous determination device of silt, cohesive soil and its test method |
| CN110687033A (en) * | 2019-11-13 | 2020-01-14 | 哈尔滨工业大学（深圳） | Penetration test device for researching internal erosion anisotropy of soil body under stress action |
| CN111351741B (en) * | 2020-03-17 | 2021-05-14 | 中国海洋大学 | Ocean sediment gas permeability anisotropy testing device and using method |
| CN111351741A (en) * | 2020-03-17 | 2020-06-30 | 中国海洋大学 | Ocean sediment gas permeability anisotropy testing device and using method |
| CN112986100A (en) * | 2021-03-30 | 2021-06-18 | 中国电建集团西北勘测设计研究院有限公司 | Multipurpose permeameter device for eliminating side wall streaming effect and using method |
| CN113109230A (en) * | 2021-03-30 | 2021-07-13 | 中国电建集团西北勘测设计研究院有限公司 | Novel earth and rockfill dam construction material seepage deformation test system and method |
| CN114965206A (en) * | 2022-04-14 | 2022-08-30 | 中国电建集团西北勘测设计研究院有限公司 | Comprehensive testing system and method for anisotropic permeability coefficient of rock-soil body |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20161217 |
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| CF01 | Termination of patent right due to non-payment of annual fee |